How a nomadic Turkish tribe became the leaders of the Islamic world

Cultures · Published 1 October 2026 Swipe more like this →

In short: Born from the chaos of Mongol invasions, a small Anatolian principality transformed into a global superpower. Beyond mere conquest, the Ottoman dynasty claimed a sacred title that reshaped the religious and political landscape of three continents for over six centuries.

The Ottoman story began around 1300, when Osman I, a leader of the Kayı tribe, established a small state in northwestern Anatlin. Following the Mongol defeat of the Seljuk Turks in the late 13th century, various independent Turkmen principalities emerged in Anatolia. The early Ottomans operated as ghāzī, or religious raiders, expanding their territory by fighting against the declining Byzantine state.

While Ottoman rulers began using the title of caliph as early as the 14th century, their religious authority was initially limited to their own borders. A pivotal shift occurred in 1517 when Sultan Selim I conquered Mamluk Egypt. By absorbing Mamluk territories, the Ottomans gained control of Islam's most sacred sites, including Mecca, Medina, and Jerusalem. This allowed the dynasty to transition from local rulers to claimants of universal caliphal authority.

At its peak during the 15th and 16th centuries, the empire stretched from the gates of Vienna through the Balkans and Greece to North Africa and the Arabian Peninsula. This era saw a unique blending of political and social institutions, merging Islamic traditions with those inherited from the Byzantines and Central Asian Turkish empires.

The prestige of the caliphate faced significant challenges in the modern era. During the late 19th century, Sultan Abdul Hamid II used Pan-Islamist policies to maintain influence, but territorial losses and the 1908 Young Turk Revolution weakened the office. The empire finally collapsed after World War I, and the caliphate was officially abolished in March 1924 as part of the transition to the secular Republic of Turkey.

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